The microfiltration should be performed at low temperatures, in order to avoid production of high concentration of undenatured proteins, with minimum concentration of fats, lactose and cholesterol. (fitnessandpower.com)
Each value is representative of at least two replicate ELISAs repeated until a single consistent minimum concentration was established. (jem.rupress.org)
Pet food manufacturers are also required to state maximum and minimum concentrations of nutrients that must be present for small and large animals in various life stages. (okcpetsmagazine.com)